Finding the Fourth Proportional to 351,918.40, 528,007.20 and 141,707.20
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Solution
The fourth proportional to 351,918.40, 528,007.20 and 141,707.20 is: 212,612.99
Step by Step Solution
- Step 1: Write the proportion equation
351,918.40 : 528,007.20 = 141,707.20 : x - Step 2: Convert to fraction form
351,918.40/528,007.20 = 141,707.20/x - Step 3: Cross multiply
351,918.40x = 528,007.20 × 141,707.20 - Step 4: Simplify right side
351,918.40x = 74,822,421,891.84 - Step 5: Solve for x
x = 74,822,421,891.84/351,918.40 - Step 6: Final answer
x = 212,612.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.